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19 June 2000, Volume 19 Issue 3 Previous Issue    Next Issue

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Study on squeezing effect against soil and pore pressure by pile pushing in saturated soft clay foundation BAI Bing, XU Jian-ping, ZHOU Jian 2000, 19(3): 1-3,7.  Abstract ( )   PDF (175KB) ( )   The excess pore water pressure of saturated soft clay foundation caused by pile pushing is obvious.The method for calculating squeezing stress and excess pore pressure by elastic-plastic theory is deduced in this paper,and furthermore,the reasonable pile spacing by regarding the influence of both squeezing stress and excess water pressure is given. Related Articles | Metrics

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Finite element analysis system BNAP based on MS-Fortran Powerstation V4.0 CHENG Jin, XIAO Ru-cheng, XIANG Hai-fan 2000, 19(3): 4-7.  Abstract ( )   PDF (267KB) ( )   MS-Fortran Powerstation V4.0 is a powerful Fortran decode system.In this paper,the fundamental features of MS-Fortran Powerstation V4.0 have been presented.Finally,based on MS-Fortran Powerstation V4.0,an interactive finite element analysis program BNAP has been developed. Related Articles | Metrics

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Simulate calculation study of cable-stayed force for arch bridge segmental construction ZHOU Shui-xing, JIANG Li-zhong, ZENG Zhong, ZHOU Jian-ting 2000, 19(3): 8-12.  Abstract ( )   PDF (205KB) ( )   Cable-stayed is used to cable suspension,but cable force is calculated by manual,and only for less than 5 segments,and the prescion is poor.This paper puts forward "Zero moment Method",which can not only calculate more segmental soupe force,but both temporary joint and fixed joint during construction.The Mechanical concept is clear,and it is easy for calculating.It is fit for program,and the illustrations prove that the methods are right. Related Articles | Metrics

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The application of the Kalman's filtering method to construction control for PC continuous rigid frame bridge ZHANG Yong-shui 2000, 19(3): 13-15,21.  Abstract ( )   PDF (169KB) ( )   In this paper,emphasis is laid on discussion about the appolication of the Kalman's filtering method to construction control for PC continuous rigid frame bridge.By means of applying the Kalman's filtering method to Chongqing Huanghuayuan Jialing river bridge.It demonstrates that the Kalman's filtering method is applicable for construction control for bridges of the same pattern. Related Articles | Metrics

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The alternate calculation method of constant-cable-length in non-stress for the structural analysis of suspension bridges XIANG Zhong-fu, XU Jun-lan, DAI Zheng-hong 2000, 19(3): 16-21.  Abstract ( )   PDF (233KB) ( )   The alternate calculation method of constant cable-length in non-stress for the structural analysis of suspension bridge in construction is introduced in this paper. Related Articles | Metrics

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Study on disease analysis and consolidance of stone arch bridge under its construction ZHOU Jian-ting 2000, 19(3): 22-24,39.  Abstract ( )   PDF (166KB) ( )   In this article,by taking the example of Wenxin Bridge,the writer put forward the theory of harnessing disease stone arch bridge under its construction by adjusting arch axis.The result is effective and useful in practice. Related Articles | Metrics

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The study on consolidating and widening pattern of city bridge ZHOU Jian-ting 2000, 19(3): 25-28.  Abstract ( )   PDF (160KB) ( )   This article takes up a consolidating and widening,pattern of city bridge by practice.The result of analysis shows that this pattern is economic,safe and beautiful which can be widely used in practice. Related Articles | Metrics

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Study on different resources numbers piling up method and astrictive conditions in twin-code name network technique WANG Shou-xu 2000, 19(3): 29-34.  Abstract ( )   PDF (244KB) ( )   Based on a numbers piled up for varies resources (labor,materials,mechines) in neuron plan,a composed distribution for various resources was obtained.Then,using time difference and quantities of materials,the best selected work and time started as astrictive conditions,the best optimum distribution which satisfied variou resources in difference optimodel and astrictive conditions was got. Related Articles | Metrics

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Construction technology of bored pile foundation of main bridge of Qi'ao Bridge XU Hui-qiang 2000, 19(3): 35-39.  Abstract ( )   PDF (200KB) ( )   This article discusses the formation of the drilling rig platform,selection of the hole forming equipment and treatment of some incidents occurred during the construction of the bored pile foundation of the Qi'ao Bridge in Zhuhai under different geological conditions.It also studies such issues as the embedment of the steel casing and bottom elevation of the bored pile on the inclining rock and katarock. Related Articles | Metrics

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Analysis on route choice of traffic flow and generalized travel cost WANG Jun-yan, WEI Lian-yu 2000, 19(3): 40-43,46.  Abstract ( )   PDF (205KB) ( )   This paper sets up a logarithm multi routes choice model of transport passage system predicating on the maximum of system utility and puts up the demarcating method of its parameter and its numerical solution.Then it gives an example.This model can forecast the ration of traffic distribution on each route in a network.It can also be used to analyse influence of service attribution on road users' choice of routes. Related Articles | Metrics

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The comparative research of asphalt mixture dynamic stability and relative deformation WANG Xu dong, HE Zhao-yi 2000, 19(3): 44-46.  Abstract ( )   PDF (131KB) ( )   This paper discusses the two indexes,dynamic stability and relative deformation,that evaluate the high temperature stability of the asphalt mixture by rutting test.Through analyses,it is more reasonable that the relative deformation is used to evaluate character of asphalt mixture. Related Articles | Metrics

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Investigation on the cause of concrete pavement failure and rehabilitation methods MU Chang-chun, YANG Xi-wu 2000, 19(3): 47-50,53.  Abstract ( )   PDF (212KB) ( )   Based on the results of investigation on concrete pavement failure in Chongqing district the cause and affective factors of concrete pavement failure is analysed in this paper.The rehabilitation methods of cracking concrete pavement are presented.It is helpful to the structure design and rehabilitation of concrete pavement in a mountainous district. Related Articles | Metrics

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A new method on priority rating of pavement maintenance planning MU Chang-chun, HE Zhao-yi 2000, 19(3): 51-53.  Abstract ( )   PDF (134KB) ( )   A new method on priority rating of pavement maintenance planning. Related Articles | Metrics

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Study of reinforced highway subgrade with grouting cement mortar LIANG Nai-xing, CHEN Zhong-ming, WANG Xiao-rong 2000, 19(3): 54-57,62.  Abstract ( )   PDF (243KB) ( )   In this paper the behavior of reinforced highway subgrade with grouting cement mortar is analysed thoroughly.The reinforcing effect is studied systematically.This study has reference value for reinforcing highway subgrade with grouting cement mortar. Related Articles | Metrics

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3-D finite element analysis of subsidence on high embankment HE Zhao yi, ZHOU Hu xin 2000, 19(3): 58-62.  Abstract ( )   PDF (198KB) ( )   In this paper,the subsidence of high embankment is discussed,3-D Finite element technique is developed and calculation programs are compiled.The results of calculation possess high reliability and precision.Eventually,the calculation results are used for engineering pratice. Related Articles | Metrics

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Th testing method and application of cement-mixed column by DMM SHI Ming-lei, ZHU Sen-lin, ZHANG Xiao-dun, YAO Dai-lu 2000, 19(3): 63-67.  Abstract ( )   PDF (209KB) ( )   The working principles and the applied characteristics of the integrity tests for cement-soil column by Deep Mixing Method (DMM )were analysed,by means of the testing practices.Based on a testing application of a certain composite ground by DMM,the judge method of the standard penetration test was presented.Finally,the paper gives some of the test results and discussion about the advantages of the low-strain vibration test applied on the cement-mixed column.The documentation gives guidance for future tests for the composite ground stabilized by DMM. Related Articles | Metrics

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Optimum design of individual foundation considering the effect of soft sub-layer and settlement ZHOU Yong-yong, HE Shui-yuan 2000, 19(3): 68-71.  Abstract ( )   PDF (172KB) ( )   Optimum design of individual foundation considering the effect of strength and deformation is discussed in this paper.The optimal mathematical model of determining the bottom surface demention of individual foundation under eccentric load is derived.The optimal solution is decided by method of optimization and the method we select is penalty fonction and complex method.The program of optimum algorithm is comiled and design and drawing of individual foundation is completed.The final results of engineering samples suggest that the cost of material and engineering amount can reduce approximatly 5%-6%.A fair-sized economic efficiency can be received by using optimum method to design foundation. Related Articles | Metrics

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Protection of subgrades forms and application for highway along rivers WANG Ya-ling 2000, 19(3): 72-75.  Abstract ( )   PDF (182KB) ( )   In this paper,all the various forms of protecting engineering are summarized.And it presents recommend protecting engineering forms suitable to different type mountain area rivers.The results in paper can supply a valuable reference for highway designer. Related Articles | Metrics

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Practice to bringlandslides on the national road 319 under control LIU Shou-zhen, HE Zhao-yi, ZHU Hong-zhou 2000, 19(3): 76-79.  Abstract ( )   PDF (168KB) ( )   To bring a landslide on the National Road 319 under control,this paper analyzes two plans in technology and expenses and put forwards an appropriate design scheme,which afford experience to control of the landslide in middle area of Sichuan.The project is being carried on. Related Articles | Metrics

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The treatment of xijiang highway landslide on the complicated geologic structure XU Ji-jiang, XIAO Yu-lin 2000, 19(3): 80-84,93.  Abstract ( )   PDF (233KB) ( )   This paper introduces the treatment of Xijiang highway landslide on the complicated geologic structure. Related Articles | Metrics

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An analysis of the stability of roads and bridges in the mined-up region of the taigu highway and the treating scheme LI Man-tun 2000, 19(3): 85-87.  Abstract ( )   PDF (135KB) ( )   Along the second grade road from Taiyuan to Gujiao,there are twenty kilometers passing the coal series' layerzone of shanxi and Taiyuan groups of Taiyuan basin,where many small coalpits spread.The collapse of these small coalpits dose great harm to the construction of the road and bridges.Through analyzing the stability of the mined-up region,this paper proposes injection and geotechnical cellular as a join slab method to make sure the safety of the road and bridges during their lives. Related Articles | Metrics

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Testing research of treating methods on soil with high water content TANG Xiou-ying 2000, 19(3): 88-93.  Abstract ( )   PDF (223KB) ( )   In order to study the economic and practical methods of treating soil with high water content for cut subgrade,both the laboratory and field tests such as replacement,lime-additive and geonet reinforcement were conducted respectively.The physical and mechanical characteristics before and after treating the soil with high water content were achieved.The results showed that the good effect could be achieved by adopting the foregoing three treating methods especiaslly replacement and geonet reinforcement. Related Articles | Metrics

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Bond length prediction of fully-grouted cable bolts in rock QU Shi-qin, HUANG Zhong-mu 2000, 19(3): 94-97,108.  Abstract ( )   PDF (212KB) ( )   How to decide the reasonable bond length of grouted bolts in rock is the primary element in structural reinforcement design.Safety and economy is the basic requirements.The paper presents favor bolt length in rock using models of elasticity properties,brittle cracking of grout and safe consideration and also shows that geometry of borehole and bolt are all relevant parameters in the development of the bolt grout interface pressure which result in bond strength increasing. Related Articles | Metrics

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Realization of supervision unit carried on ISO9000 quality attestation LUO Na, LUO Tao 2000, 19(3): 98-100.  Abstract ( )   PDF (130KB) ( )   Supervision Unit,as a social intermediary organ,is different from industrial enterprise to be carried on ISO9000 Quality Attestation.On the basis of the experience of Supervision Unit's implementing standards,this paper,according to its particularity,clarifies the main points of quality system and quality administration to supervision unit. Related Articles | Metrics

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Investigation of control measures for rochfall obstracting sea-route of Wujiang River byexperiment LI Ping, YUAN Ping 2000, 19(3): 101-105.  Abstract ( )   PDF (205KB) ( )   According to peculiarity of rockfall obstructing sea-route of Wujiang River.control measures are studied by physical model and vessel model.The achievement is progr.This paper introducs the design、validity and experiment of model.When control engineering is completed,the status of navigation improvs and the achievement of control measures is outstanding. Related Articles | Metrics

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The surface hole of pre-stress gate frusta optimizing design in Ankang waterpower-station XU Run-sheng 2000, 19(3): 106-108.  Abstract ( )   PDF (135KB) ( )   This paper puts forward the structure theory of the ‘deep slot and anchor hole’ by studies on the anchor bundle bolting part of the surface hole pre-stress gate frusta in Ankang waterpower-station.The method can save 50% quantities of anchor bundles in contrast to original scheme.In addition,the construction is more convenient.It provides the conditions for generating electricity ahead of schedule. Related Articles | Metrics

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Supervisory control system for silt model-testing of Chongqing River reach DING Sheng-qi 2000, 19(3): 109-112,115.  Abstract ( )   PDF (144KB) ( )   This paper introduces the supervisory control system which realizes visual administration for silt model testing of Chongqing river reach.The composition of this system、basic function and control principle is proposed.And in this paper,it is also delivered that a principle and method of PWM position control for AC servo machinery. Related Articles | Metrics

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The gray evaluation method of hydrological data and it's application YANG Yun-yun 2000, 19(3): 113-115.  Abstract ( )   PDF (133KB) ( )   A new method-gray relation method,which is used to analyze the quality of the hydrological data,is discussed and the example of the method is given together. Related Articles | Metrics

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Topological type of minmax theorems with applications to equilibrium problems for abstract economies WANG Da-cheng 2000, 19(3): 116-119.  Abstract ( )   PDF (170KB) ( )   As applications of the parametric type of topologivally finite intaersection theorem in[1], a vector-valued minmax theorem in interval spaces is first proved and, some corollaries are obtained. Utilizing these results, some topological section theorems with their equivalent froms are obtained, and existence problems of Nash equilibria and Shafer-Sonneinschein equilibria for the abstract economies have been studied in this paper. Related Articles | Metrics